avernio.com ad: Avernio.

You finally start dozing off on a 10-hour flight… and your head drops forward like a bowling ball. You jolt awake. Again. And again. For the entire flight. Neck pillows don't fix this. They never have. Your head still falls forward, sideways, or ends up on a stranger's shoulder. This travel sling straps onto any airline headrest and locks your head in place while you sleep. No bobbing. No stiff neck. No waking up every 20 minutes. Comes with a blackout eye mask that velcros directly onto the strap — 100% darkness, zero slipping off. Over 2,400 verified 5-star reviews. Packs flat into any carry-on.